Yeah, I didn't start out buying organic foods when DS1 was an infant because I thought it would be more nutritious. I didn't want a little 6 month old just starting out on solids to be exposed to so many pesticides! And then I moved on to organic milk and meat to avoid the hormones and antibiotics.
But there are plenty of studies showing that grass-fed dairy and meat is much more nutritious (higher CLA levels which fight cancer) than both grain-fed conventional and organic dairy and meat. Grass-fed beef is also lower in saturated fat than conventional beef. And I distictly remember a study from last year that concluded that organic oranges had MORE vitamin C than conventional oranges because conventional oranges has more water and were therefore more diluted. It's also a known fact that organic eggs have lower arsenic levels than conventional eggs.
So I will continue to buy most of my produce at the farmer's market along with the pasture-raised eggs and grass-fed beef that I buy there as well. And I'll stick with my organic grass-fed milk, cream, and cheese as well.